INVESTMENT MANAGEMENT AND OTHER FEES (Details) - Disaggregation of Revenue - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Operating Revenue	$ 6,355	$ 914	$ 14,321	$ 2,605
Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	51	39	153	128
Investment and Advisory Services [Member] | Investment Management Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	6,304	875	14,168	2,477
U.S. Global Investors Funds [Member] | Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	51	39	153	128
U.S. Global ETFs [Member] | Investment and Advisory Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,170	201	11,107	455
Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member] | Base Advisory Fee [Member[
Disaggregation of Revenue [Line Items]
Revenues	978	753	2,781	2,413
Investment and Advisory Services [Member] | U.S. Global Investors Funds [Member] | Investment Performance [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 156	$ (79)	$ 280	$ (391)